Franklin ames



A Witnesses l Inventor /f/ @Aw-w dini-tt gieten tout entre FRANKLINAMES, OF NORTH BRIDGEWATER, MASSACHUSETTS.

Leners 17mm: No. 106,534, dated August 23, 1ero.

- IMPROVEMENT INTMACHINES FOR RULIG- SLATES.

The Schedule referred to in these Letters Pater-1t and making part ot'the' name.

ment by which my invention may be distinguished from others of a similarclass, together with such parts as I claim and desire to lsecure byLetters Patent.

lhe objeclsof this invention are:

First, a machine, by which one side of the slate can bc ruled at onestroke.

Second, a method by which the style of rulingl can be changed readily.

Third, an improved method for lifting and depressing the ruling-chisels.

Fourth, a means by which the travel of the rulingtable may be regulated.

Fifth, an improved device by which 'the slates are held while undergoingthe process of ruling; and

Sixth,.an appliance by which the slate to be ruled can be easily broughtVinto the same relative position with the chisels.

1n the annexed drawing- Figure 1 is a perspective view of `the' machine,and

Figure 2, a longitudinal vert-ical section.

a is the bed 0 1' the machine, from which rise the sides af', whichlatter are provided with V-shaped guides b, fitting into correspondinggrooves 'b" on the table. b. This table carries the whole rulingapparatus, and is ca-pable of sliding freely on the guides b of the beda. i

The ruling-plate c, hinged to the table 1 1 at d and e, carries thechisel-frame f, which latter isfastcned to itby means oi' screws g g, orany other convenient delvice, in such a manner that theii'aine-f can beremoved quickly when it is desired to put another one in place.

The chisel-frame consists of a thin plate, 71, provid1 ed with thestrips i, t', which latter are notched on the side next to the plate hfor the purpose of forming recesses into which the chisels o o can beintroduced.

These chisels may be fastened permanently to the together4 than thedistance between theadjacent chise-ls will al,low,'one chisel isprovided with a number of points corresponding to the lines desired, asshown at For the purpose of bringing the chisels o in contact with-theslate/r, the crank on, shaft n, crank s, and link t have been provided.

The shaft n oscillates freely in bearings n" on the vtable b,.and thelink t connects Vthe crank .sand

plate c. K

The relative position oi' the cranks m and s on the shaft 'n is suchthat, when the crank m is moved entirely to the left, as in figs. 2 andl1, the crank s, fig. 2, will have slightly passed its dead center, andwillv have moved the back of the4 plate c to its highest posit-ion, andconsequently the front side, with the attached chisel-trame, to itslowest.

It will vbe readily seen that, as the. crank m cannot move any furtherto. the left, and as the crank s has slightly passed its dead centerftheparts will remain in that position until the crank mis moved to theright, when the device will assume the position shown by dotted linesshown in g. 2.

The amount of motion ot' the table is regulated by the stopping-screws uu, fitting into the lugs u' u.

IVben the screws u u have been set to their right position, the screws oo are screwed against them, and

`hold them in position, answering the same purpose as When it is desiredto vary the amount of motion of i the table further `-than the length ofthe screws will are connected below the hed o. by a cross-bar, x, whichpasses through a vertical guiding-slot, rv', and through the inclinedslot y in the slide y'. This latter is ca' pable of a longitudinalmotion Vunderneath -the bed,

moving through recesses z e.

The `feet ff" serve to elevate the bed, to make room for the partsunderneath.

In order to bring the slates intended for ruling always readily into thesame relative position with the chsels, the'pins l 2 3 have beenprovided, which bear against the interior edge of' the frame oftheslate-1 and 3 against two contiguous sides, and 2 against the insidecorner.

The operation of the machine is as follows:

Vhen the slate has been laid upon the bed 1, with the interior edge ofits ira-me pushed against the pins 1 2 3, the slide y' is pushed in, bywhich motion the tingers w w are brought upon the frame of the slate,

holding it tightly. The 4table is now pushed to the left u'ntil the lugmeets the screw u, when, by t-urning the crank m to the left, thechisels are broughtin 'Contact with the slate, and, on drawing the tabletoward the right, the linear impressions are made upon the slate.

l claim as my invention only what is mentioned in the following clauses,viz:

1. Theoomhination ofthe cranks mand s, shaft n, mid

link t with the :plate c and table '11, substantially as and for the'purpose specified.

2. The combination of ,the fingers w w, cross-bm' x, recesses lw' w',slot z, inclined slot y, slide y', and recesses z e' with the bed a,substantially as and for the purpose set-forth. Y

Witnessesz FRANKLIN AMES.

' H. A. DANIELS,

J. W. MESTER.

